Johannes W Huijbers

US Patent:

20050184472, Aug 25, 2005

Filed:

Feb 12, 2002

Appl. No.:

10/502315

Inventors:

Johannes Huijbers - Eden Prairie MN, US
Dennis Mills - Long Lake MN, US

International Classification:

B23B031/30

US Classification:

279004010

Abstract:

A hydraulic holder () of a cutting tool or workpiece with a hydraulic circuit () contained in a cartridge () separate from the holder (). The cartridge () is fixedly inserted in an axial bore () of the holder for clamping a tool or workpiece. The hydraulic cartridge () comprising a first actuator access port () in the toolholder; a second actuator access port () in a cartridge shell (); a cartridge body () affixed fluid tight in the cartridge shell (); the cartridge body having (i) a piston cylinder () in axial alignment with the first actuator access port and the second actuator access port.

US Patent:

20050044686, Mar 3, 2005

Filed:

Aug 25, 2003

Appl. No.:

10/648734

Inventors:

Johannes Huijbers - Eden Prairie MN, US
Dennis Mills - Long Lake MN, US

International Classification:

B23P011/00
B23C001/00

US Classification:

029428000, 409232000

Abstract:

A tool or workpiece holder comprised of a hydraulic circuit in a cartridge located in the holder's axial bore. The cartridge comprising (i) an inner wall surrounding and forming an inner clamping bore, (ii) an outer shell surrounding the inner wall, (iii) at least one positioning ring, (iv) a hydraulic circuit, (v) a deformable clamping band in the inner wall, (vi) hydraulic fluid filling the hydraulic circuit, (vii) an actuator for compressing the hydraulic fluid in the hydraulic circuit.